.main_menu
{
    height:30px;
    line-height:30px;
    color:#FFF;
    position:relative;
    font-family:Arial, Helvetica, sans-serif;
    font-size:13px;
	margin-right:50px;
}
.main_menu ul
{
    padding:0px;
    margin:0;
    list-style:none;
}
.main_menu ul li
{
    padding:0;
    margin:0;
    border-right:1px solid #000000;
    float:left;
    background:#333333;
}
.main_menu ul li a
{
    color:#FFF;
    display:block;
    text-decoration:none;
    padding:0 25px;
}
.main_menu ul li a:hover
{
    background:#3ea5ea;
    color:#000;
}
.main_menu ul li ul
{
     display: none; 
     width: auto;
     position:absolute;
     top:30px;
     padding:0px;
     margin:0px;
}
.main_menu ul li:hover ul
{
     display: block;
     position: absolute;
     margin: 0;
     padding: 0; 
}
.main_menu ul li:hover li
{
    float: none;
    list-style:none;
    margin:0px;
}
.main_menu ul li:hover li
{
    background:#333;
    border-top:1px solid #000000;
}
.main_menu ul li:hover li a
{
    color: #fff;
    padding:0 20px;
    display:block;
    width:170px;
}
.main_menu ul li li a:hover
{
    color:#000;
}